Scalability: journal:index is read/rewritten in full on every append and every list
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 35/100
- Issue type
- Refactor
- Clarity
- Needs clarification
- Activity status
- Quiet
- Tech stack
- typescript
- Domain
- backend, databases, performance
Research direction
Start in src/kv.ts by reading appendJournalEntry and listJournalEntries, then inspect scripts/promote.ts to confirm how promotion currently handles journal entries. Decide among pruning promoted entries, cursor-based KV listing, or documenting a maximum journal size; the work is done when the selected scalability approach is implemented or the size constraint is explicitly documented.
Written by the indexing model from the issue text.
Description
src/kv.ts appendJournalEntry reads the whole journal:index array, pushes one id, writes the whole array back on every single append. listJournalEntries reads journal:index then fetches every entry with kv.get in a Promise.all, then filters by since/limit in memory - no pagination against KV itself.
As the journal grows this is O(n) KV read+write per append and O(n) KV reads per list call. Since there is no promotion-driven pruning of old entries visible in scripts/promote.ts (it never deletes, only tracks review state locally), journal:index will grow unbounded over the life of the deployment.
Worth deciding: either (a) archive/prune promoted entries out of journal:index via a script, or (b) switch listing to KV list-by-prefix with cursor pagination instead of an index array, or (c) explicitly document a expected max journal size and revisit before it is exceeded.
- Dominant language
- TypeScript
- Stars
- 1
- Forks
- 0
- PR merge metrics
- No merged PRs in 30d
Getting set up
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First steps
- Read the whole issue, then the project's contributing guide.
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- Open a pull request that references the issue number.
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